东北大学学报:自然科学版 ›› 2016, Vol. 37 ›› Issue (6): 880-885.DOI: 10.12068/j.issn.1005-3026.2016.06.025

• 资源与土木工程 • 上一篇    下一篇

紫外激活过硫酸钠降解环境雌激素17β-雌二醇分析

郭洪光1,2, 刘杨2, 张永丽2   

  1. (1. 四川大学 制革清洁技术国家工程实验室, 四川 成都610065; 2. 四川大学 建筑与环境学院, 四川 成都610065)
  • 收稿日期:2015-09-18 修回日期:2015-09-18 出版日期:2016-06-15 发布日期:2016-06-08
  • 通讯作者: 郭洪光
  • 作者简介:郭洪光(1986-),男,黑龙江嫩江人,四川大学讲师,博士; 张永丽(1958-),女,四川眉山人,四川大学教授,博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51508354); 四川省环保科技计划项目(2013HB08); 中央高校基本科研业务费专项资金资助项目(2082604184026); 中央高校博士后经费资助项目(0030807602026).

Analysis on the Degradation of Environmental Estrogen 17β-estradiol by Ultraviolet(UV) Light-activated Sodium Persulfate

GUO Hong-guang1,2, LIU Yang2, ZHANG Yong-li2   

  1. 1. National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China; 2. College of Architecture and Environment, Sichuan University, Chengdu 610065, China.
  • Received:2015-09-18 Revised:2015-09-18 Online:2016-06-15 Published:2016-06-08
  • Contact: GUO Hong-guang
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摘要: 针对自然水体中引起广泛关注的环境雌激素问题,采用低压汞灯激活过硫酸钠(PS)方法构建UV/PS复合体系,降解水中残留的典型环境雌激素17β-雌二醇(E2).实验考察了在UV/PS体系下溶液初始pH值、过硫酸钠的初始浓度、常见阴离子(Cl-,HCO3,NO3)等环境因素对E2降解的影响,并对反应动力学机理进行了阐述.结果表明:UV/PS体系降解E2遵循拟一级动力学反应模型;反应最佳pH值为7.0;增加过硫酸钠投量,可促进E2的降解;环境阴离子可促进E2的降解;体系中降解E2的主要自由基为·SO4.研究为UV/PS高级氧化体系降解环境雌激素方面提供了理论依据.

关键词: UV, 硫酸根自由基, 17β-雌二醇, 影响因素, 机理

Abstract: The problem of environmental estrogens caused wide spread concern in natural water, using low pressure mercury lamps activated sodium persulfate (PS) composite system to degrade 17β-estradiol (E2)of residual in the water which is a typical environmental estrogens. The effect of different initial pH, sodium persulfate concentration, common anions(Cl-,HCO-3,NO-3) on degradation of E2 and the mechanism of reaction kinetics were investigated. The results showed that the degradation of E2 by UV/PS system follows pseudo-first-order kinetic model and the optimum pH is 7.0, the removal of E2 increases with adding the sodium persulfate concentration, the environmental anion may promote the degradation of E2. It is demonstrated that the principal free radical is·SO-4 in the system. This study provides a strong theoretical basis for UV/PS advanced oxidation degradation of environmental estrogen.

Key words: ultraviolet, sulfate radical, 17β-estradiol, impact factors, mechanism

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